Using a compare and contrast http://essayservice.com/blog/compare-and-contrast-essay essay to discuss two or more subjects is a great way to show the audience how much of a difference there is between the two. It can also build your argument. It is important to know the structure of a compare and contrast essay before you start. There are two common types, a point-by-point structure, and a block structure. The point-by-point structure is a good way to organize facts and information. Each object is listed in its similarity, and the difference is listed after it. This method is easier to write than the block method.